title: Idiopathic retroperitoneal fibrosis.
mesh_terms: D001012:Aorta, Abdominal; D001014:Aortic Aneurysm / Q000150:complications; D006801:Humans; D008784:Methysergide / Q000009:adverse effects; D012185:Retroperitoneal Fibrosis / Q000601:surgery*
chemical_list: D008784:Methysergide